1973 454/245 update

[Adger Smith]

CHEVROLET - 1973

250 250 350 350 400 400 350 350 454 454 454 454
* ** * ** * ** * ** * ** * **
Manual Only Manual Only Auto Only Auto Only Auto Only Auto Only Auto Only Auto Only Auto Only Auto Only Auto Only Auto Only
&-$-% &-$-% $$ &-$-% &-$-% &-$-% && &&

100hp 100hp 145hp 145hp 150hp 150hp 175hp 175hp 215hp 215hp 245hp 245hp

BEL AIR 121.5
Sedan 4 Dr 26.95 26.95 18.07 18.07 15.11 14.33 11.89 11.89

IMPALA 121.5
Sedan 4 Dr(Sport) 18.15 18.15 15.17 14.39 12.05 12.05
Coupe 2 Dr (Coupe) 17.92 17.92 16.93 16.93 14.99 14.21 11.90 11.90
Coupe 2 Dr (Sport) 17.86 17.86 14.93 14.16 11.86 11.86
Sedan 4 Dr 18.04 18.04 15.09 14.31 11.98 11.98

CAPRICE CLASSIC 121.5
Sedan 4 Dr (Sport) 16.88 16.88 12.14 12.14
Coupe 2 Dr (Custom) 16.61 16.61 11.96 11.96
Convertible 16.81 16.81 12.09 12.09
Sedan 4 Dr 16.75 16.75 12.05 12.05

STATION WAGONS 125
Bel Air 4 Dr 2S 20.61 20.61 18.96 18.96 13.58 13.58
Bel Air 4 Dr 3S 20.84 20.84 19.18 19.18 13.71 13.71
Impala 4 Dr 2S 20.71 20.71 19.06 19.06 13.65 13.65
Impala 4 Dr 3S 20.99 20.99 19.32 19.32 13.82 13.82
Caprice Estate 4 Dr 2S 19.28 19.28 13.78 13.78
Caprice Estate 4 Dr 3S 19.52 19.52 13.95 13.95

S/SS Factors 145 145 230 230 250 250 275 290 365 365 365 365
12.18.02 12.18.02 1.1.10 1.1.10 7.31.02 5.30.02 7.31.02 7.31.02
S/SS FACTORS w Replacement Heads 235 235 255 260 280 300 375 375
1.1.18 1.1.18 1.1.18 1.1.18 1.1.18 1.1.18 3.20.14 3.20.14








% = RHS Cast Iron heads # 12400 & 12402 accepted as replacement head
$ = Edelbrock heads # 60887, 60637 accepted as replacement head
$ = Dart Cast Iron heads with cast # 10021070, 100220010 accepted as replacement head
& = World Products Cast Iron heads with cast #'s 043600 & 043610 accepted as replacement heads
&& = Edelbrock 60447,GM 12363391
$$ = RHS 12400, World 043600


* = Stock Factor
** = Super Stock Factor